Position sensor and method for determining a position of a timepiece setting stem
US10267653B2 · kind B2 · utility
1Cited by
1References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 22, 2015 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Apr 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position sensor and method for determining an axial and/or an angular position of a setting stem of a timepiece. A magnet is provided on the setting stem, and at least one magnetic field sensor is configured to detect changes in magnetic field strength along at least a first axis and a second axis as the rotatable element rotates; the second axis is not parallel to the first axis. The changing magnetic field sensed by the magnetic sensor is converted into a characteristic signature path which may then be mapped onto a circular signature path in two dimensions to derive the angular position of the setting stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.